Hello,I am the person that will be helping you today.
How are you opening the files? Are you double clicking the files in a Finder window or are you opening them from within the Numbers app?
I will be standing by, looking forward to your response.
Thank you for the update. May I start a secure remote assistance session with you so that I can better help you resolve this problem? When the remote session begins, a chat window will appear that we can use to communicate with each other.
There is an extra cost because the remote session will take a bit more of my time. That will be the last charge for the day and everything is guaranteed to work.
Okay, thank you. If you change your mind, I am here.